Beekeepers collect honey in a cole flower field in Xuetang Village of Yanshan County, north China's Hebei Province, April 24, 2017. (Xinhua/Fu Xinchun)
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Beekeepers collect honey in a cole flower field in Xuetang Village of Yanshan County, north China's Hebei Province, April 24, 2017. (Xinhua/Fu Xinchun)